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Пам'яті Олега Кубея та Олександра Чухно kpi ср, 02/26/2025 - 12:13

Aeluma Inc of Goleta, CA, USA – which uses compound semiconductor materials on large-diameter substrates to develop technologies for mobile, automotive, AI, defense & aerospace, communication and quantum computing – has appointed finance executive Mike Byron to its board of directors...

Murata and Rohde & Schwarz have developed the world’s first Voice over Narrowband Non-Terrestrial Network (NB-NTN) testbed. To be presented at Mobile World Congress 2025 in Barcelona, this innovative demonstration marks a significant leap in 3GPP based satellite connectivity. The resulting push-to-talk like application will enhance safety and communication capabilities in areas without terrestrial network access.

Murata and Rohde & Schwarz have collaborated to introduce the world’s first testbed for Voice over Narrowband Non-Terrestrial Network (NB-NTN), presented at Mobile World Congress 2025 in Barcelona. With this demonstration, the two companies set a new standard for satellite-based communications, paving the way for voice capabilities even in the most bandwidth-constrained environments.

The innovative testbed utilizes the CMW500 wideband radio communication tester from Rohde & Schwarz as a GEO/GSO satellite eNB emulator, along with Murata’s Type1SC Cat.M1/NB-IoT/NB-NTN module featuring the Sony’s Altair Chip ALT1250. It also employs a VoIP client application developed by Rohde & Schwarz, which uses codecs that operate at ultra-low bitrates. This technology addresses critical communication needs where traditional networks are inadequate. The demonstrator opens the door for push-to-talk-like NB-NTN applications, making it particularly suitable for emergency situations, disaster response, remote areas, and maritime operations.

With the rapid adoption of NB-NTN chipsets in smartphones, wearables, and automotive systems, this technology significantly enhances ubiquitous connectivity solutions. The demonstration highlights the potential of enhanced Narrowband NTN service with push-to-talk voice in addition to emergency SOS, and SMS. The partnership between Murata and Rohde & Schwarz reflects their joint commitment to advancing NTN related use cases.

Visitors to MWC 2025 can experience this milestone demonstration live at the Murata booth 5D66 in hall 5 of the Fira Gran Via in Barcelona from March 3 to 6, 2025. For further information, please contact your local Murata sales representative or go to https://www.murata.com.

The post Murata and Rohde & Schwarz present the world’s first Voice over Narrowband NTN testbed at MWC Barcelona 2025 appeared first on ELE Times.

Популяризуємо фізику! KPI4U-1 ср, 02/26/2025 - 00:34

Finally took the plunge and started to solder NOT, AND, and OR gates onto perfboard. Breadboarded an XOR this evening which I got working without frying anything too! Used 2N7000s for all of these (please don’t attack me for forgetting gate resistors). I’m super excited to start expanding into more complex projects soon!.. submitted by /u/Diligent_Ad282 [link] [comments]